C1212121231123232233131323223313231333132322133313231331121133131   >>    C121212123112323223313132322331323133313232213331323133112113313   <<    C1212121231123232233131323223313231333132322133313231331121133133   >>      C1212121231123232233131323223313231333132322133313231331121133132   >>